US3229619A - Press - Google Patents

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Publication number
US3229619A
US3229619A US296193A US29619363A US3229619A US 3229619 A US3229619 A US 3229619A US 296193 A US296193 A US 296193A US 29619363 A US29619363 A US 29619363A US 3229619 A US3229619 A US 3229619A
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US
United States
Prior art keywords
pressure
press
columns
cylinder
pressure member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US296193A
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English (en)
Inventor
Marinus Van Dranen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Machinefabriek A Bijlenga NV
Original Assignee
Machinefabriek A Bijlenga NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Machinefabriek A Bijlenga NV filed Critical Machinefabriek A Bijlenga NV
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Publication of US3229619A publication Critical patent/US3229619A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/041—Guides
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J25/00—Cheese-making
    • A01J25/12—Forming the cheese
    • A01J25/15—Presses therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0052—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for fluid driven presses

Definitions

  • FIG.2 BY Mam mus VAN Dam/Eu ATT KN YS Jan. 18, 1966 M.VAN DRANEN PRESS 2 Sheets-Sheet 2 Filed July 19, 1963 FIG.2
  • the invention relates to a press comprising a supporting member for the support of the article to be pressed and a straight guiding device fixedly connected to the supporting member which with the aid of an actuating mechanism connected hereto and active under influence of a pressure medium is movable along the guiding device to and away from supporting member.
  • the cylinder of the mechanism is usually fixedly attached to a pressure member or yoke connected to the guiding device, while the piston of the mechanism is attached to the movable pressure member or die, which is guided between a heavy frame construction comprising the first mentioned pressure member or yoke, the supporting piece or anvil and a pair of parallel columns.
  • the length of the stroke of the movable pressure memher is, of course, determined by the length of the cylinder.
  • a great stroke length is required, e.g. with a cheese press where the article to be pressed consists of a number of separate units laced on each other, more the number of the units should be variable, consequently a considerable length of the cylinder is required which makes the press more valuable but is also a disadvantage due to the space required by the press even with a horizontal arrangement of the guiding :device.
  • the height or length of the press could be twice the length of the piston stroke due to the height of the article to be pressed in its unpressed condition.
  • a press of the type described in the preamble and made in accordance with the present invention contemplates using a second pressure member at the side of the first pressure member facing away from the supporting piece and which is movable along the guiding device.
  • an actuating mechanism is provided for the movement of the second pressure member and is connected to said second pressure member with both pressure members alternately attachable and releasable respectively with regard to the guiding device.
  • the actuating mechanism which may comprise a cylinder with a movable piston therein with the press according to the invention
  • the second pressure piece which is most remote from the supporting piece has first been attached to the guiding device and then the first pressure piece has been released from the guiding device
  • this first pressure piece will move to the supporting piece by expansion of the actuating mechanism, on compressing the article about a distance, equal to the expansion movement of said mechanism, after which, after attaching of the first pressure piece to the guiding device and then releasing of the second pressure piece from the guiding device, the second pressure piece e.g.
  • the press having an actuating mechanism comprising a cylinder and a piston movable therein, whereas the cylinder space can be brought in communication with a source for a pressure medium, according to the invention the cylinder is attached to the one pressure piece and the piston to the other pressure piece.
  • the pressure pieces are provided with an inner deformable sleeve of flexible material embracing the column and an outer non-deformable sleeve of hard material surrounding the inner sleeve at some radial distance, which sleeves at both ends are sealingly connected to each other and the outer sleeve is attached to the pressure piece, whereas the annular space between the sleeves can be brought in communication with the source of the pressure medium, via a duct.
  • one of the pressure pieces is provided with a valve mechanism incorporated in the pressure duct system and the other pressure piece with an actuating rod having stops, for cooperating with an actuating member of the valve mechanism, a tension-spring being arranged between both pressure piews, one and another such that in one position of the actuating member of the valve mechanism, for moving the first pressure piece against the spring action to the supporting piece, pressure medium is sup plied to the cylinder, as well as to the annular space between the sleeves at the second pressure piece and then pressure medium is discharged from the annular space between the sleeves to the first pressure piece and at the end of the piston stroke, the actuating member of the valve is brought into a second position by cooperation with the actuating rod, in which position pressure medium is supplied to the annular space between the sleeves at the first pressure piece and then pressure medium is discharged from the cylinder as well as from the annular space between the sleeves at the second pressure piece, whereas a reversing valve is present in the pressure duct system
  • FIG. 1 is a diagrammatical view of the press
  • FIG. 2 is a schematic presentation of the circuitry of the hydraulic pressure system.
  • FIG. 3 is a cross-section of a pressure chamber illustrating the manner by which the sleeve grips a column.
  • the press shown is of the usual vertical arrangement and of the hydraulic type, with a transverse supporting member for the support of an article to be pressed, a pair of vertical columns 2 attached to the support member, which columns at their upper ends are joined by a bridge member 3 to constitute a fixed frame and a first transverse pressure member 4, movable up and down between the columns, to which member 4 the piston rod 5 of an actuating mechanism is attached.
  • a cylinder 6 of the actuating mechanism has a rather small axial dimension and is attached to a second transverse pressure member 7, which is also guided up and down along the columns.
  • a piston 8 attached to the piston rod has consequently a short length of stroke.
  • the pressure members 4, 7 have each been provided at their ends with a sleeve-like gripping means embracing the column 2, said means comprising an inner, easily deformable sleeve 9 (e.g., of rubber) resting against the column, and coaxially there around a rigid sleeve (e.g., from metal) which is attached at both ends sealingly to the [rubber sleeve, leaving free a pressure chamber. Furthermore, the metal sleeve is attached in a bore of the pressure member.
  • a pressure medium e.g., a liquid under pressure
  • the rubber sleeve 9 is tightly pressed against the column 2 so that the first pressure member 4 is attached to the column.
  • the pressure member 4 is released from the columns and then can be shifted again.
  • a reservoir, not shown, for the pressure liquid is via pipes, not shown, in communication with the cylinder space above and below the piston thereof as well as with the pressure chamber C between the sleeves 9, 10 of the gripping means.
  • the axial force which the gripping means of pressure member 4 or 7 can take up equals the normal force with which the inner sleeves 9 are pressed against the columns, multiplied with the coefiicient of friction between inner sleeve and column.
  • the normal force with which an inner sleeve is pressed :against the column is approximately equal to the surface of the cylinder multiplied by the pressure of the pressure medium.
  • the press will operate well if the surface of the cylinder 6 is smaller or at most equal to the total surface over which the inner sleeves 9 of the gripping means are pressed against the columns 2 multiplied by the coefiicient of friction between inner sleeve and column.
  • valve mechanism A comprising reversing valves 12 and 13 are in communication with pressure 7 and controlled by the stop 11a.
  • This valve mechanism A provides a changing over in the circuit of the pressure medium such that at first the pressure medium is admitted to the gripping means of the first pressure member 4 and then the pressure medium is discharged from the gripping means of the second pressure member 7 as well as from the cylinder.
  • the second pressure member 7 will move downwards under influence of the gravity action and under the action of the tension springs 14. The downward movement of the second pressure member 7 will continue till the operating rod 11 again changes over the operation of the valve mechanism A via the stop 11b, by which the original connection of the circuit of the pressure medium is restored.
  • first of all the pressure medium is again admitted to the gripping means of the second pressure member 7 and also to the upper side of the cylinder 6, thereafter the pressure medium is discharged from the gripping means of the first pressure member 4.
  • the assembly constituted by the first and second pressure members and the cylinder with its piston, is located at the upper side of the columns 2, it will move downwards step-wise until it meets a counter-pressure as long as there is still a distance present between it and the article to be pressed.
  • the stages are of course equal to the relatively short stroke of the piston 8 in the cylinder.
  • a second reversing valve B shown in the circuitry of the pressure medium (FIG. 2), can be actuated by hand so that on actuating a hand lever (not shown) of said second reversing valve from a first position for the above-described step-wise downward movement of the assembly to a second position, a changing over in the circuit will be contained such that the sequence of attaching the gripping means to the columns is reversed.
  • the gripping means of the first pressure member can be clamped on the said columns to coincide with the application of pressure on the lower side of the cylinder 6, and directly thereafter to have the release of the gripping means of the second pressure member 7 from the columns take place, will provide a stepwise upward movement of the press assembly.
  • the gripping means of the first pressure member When the press is only used for pressing articles which experience a permanent change of shape, the gripping means of the first pressure member will never need to take up an axial pressure. They will only have to be able to carry the weight of the second pressure member with everything attached thereto. In that case the surface with which the sleeve 9 of the gripping means of the first pressure member grips the column will be much smaller, or in other words, the sleeves 9 can be much shorter than the sleeves 9 of the gripping means of the second pressure member 7.
  • a press comprising two columns held in fixed parallel relationship, a transverse supporting member permanently fixed to said columns for supporting an article to be pressed, a first transverse pressure member being slidably mounted on said columns, a second transverse pressure member being slidably mounted on said columns between said first pressure member and said supporting member, flexible sleeve-like gripping means mounted on each end of the pressure members and slidably receiving the press columns therein, tension spring means being positioned between the pressure members and having the ends thereof connected to the pressure members, said spring means biasing said pressure members toward each other, a pressure cylinder mounted on said first pressure member, a piston reciprocably mounted within said cylinder, a piston rod having one end connected to said piston and the other end thereof connected to said second pressure member, said gripping means each comprising a flexible inner sleeve and a rigid outer sleeve, the inner and outer sleeves being sealingly connected to each other and having a space therebetween for forming a pressure chamber, an inlet for introducing a pressure fluid to each of said pressure
  • reversing valve means serving to introduce fluid pressure to the gripping means of said first pressure member'and to the cylinder and to exhaust fluid pressure from the gripping means of said second pressure member whereby the second pressure member is moved by said piston rod to- Wards said supporting member against the action of said spring means While said first pressure member is held in engagement with said columns until said piston rod reaches a predetermined point and then a change over takes place in the pressure fluid circuit whereby the second pressure member is clamped to said columns by said gripping members and said first pressure member is unclamped from said columns and allowed to be pulled towards said second pressure member by the action of said spring means.
  • said reversing valve means includes a first valve mounted on said first pressure member, an actuating rod mounted on said second pressure member, a duct system through which the fluid pressure flows, and a second, manually operated, valve, the second valve being adapted to control the direction of movement of the pressure members as a unit either towards or away from said supporting member, said actuating rod having first and second stops for engaging and operating said first valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Husbandry (AREA)
  • Environmental Sciences (AREA)
  • Automatic Assembly (AREA)
  • Press Drives And Press Lines (AREA)
US296193A 1962-08-24 1963-07-19 Press Expired - Lifetime US3229619A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL282492 1962-08-24

Publications (1)

Publication Number Publication Date
US3229619A true US3229619A (en) 1966-01-18

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ID=19754061

Family Applications (1)

Application Number Title Priority Date Filing Date
US296193A Expired - Lifetime US3229619A (en) 1962-08-24 1963-07-19 Press

Country Status (6)

Country Link
US (1) US3229619A (enrdf_load_stackoverflow)
DE (1) DE1290430B (enrdf_load_stackoverflow)
DK (1) DK107917C (enrdf_load_stackoverflow)
GB (1) GB980571A (enrdf_load_stackoverflow)
NL (1) NL282492A (enrdf_load_stackoverflow)
SE (1) SE305768B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427851A (en) * 1967-02-17 1969-02-18 Bliss Co High energy rate metal forming machine
US3665849A (en) * 1969-03-13 1972-05-30 Angelo Muraro Horizontal press for compacting scrap metal
US4174801A (en) * 1978-08-09 1979-11-20 General Dynamics Corporation Hollow core panel insert installation device
US4283825A (en) * 1979-09-04 1981-08-18 Mckay John Heavy duty press
US5215010A (en) * 1992-03-13 1993-06-01 Johnson Jerome A Free-ranging bi-directional shop press
US20100294144A1 (en) * 2009-05-19 2010-11-25 Fahrenbach Juergen Precision press

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2355647A1 (fr) * 1976-03-31 1978-01-20 Poncet Pierre Perfectionnements aux presses, notamment pour le moulage des matieres plastiques
US4509910A (en) * 1983-11-18 1985-04-09 Mts Systems Corporation Column clamping assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US697287A (en) * 1900-10-08 1902-04-08 Wesley Lincoln Spaulding Press.
US1586923A (en) * 1924-02-18 1926-06-01 Elvin E Townsend Well-drilling equipment
FR880540A (fr) * 1941-04-01 1943-03-29 Krupp Ag Presse
US2413866A (en) * 1944-06-09 1947-01-07 Laney George W Du Juice extractor
US2417697A (en) * 1944-03-29 1947-03-18 Evarts G Loomis Press
GB770293A (en) * 1954-02-12 1957-03-20 Charles Geoffrey Morgan Recovery of wax from mixtures of wax and feathers
US3015142A (en) * 1958-11-14 1962-01-02 Richard A Rosanoff Friction gripping device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1435486A (en) * 1921-06-30 1922-11-14 Lee Singletary Casing puller for oil wells
DE920508C (de) * 1949-11-11 1954-11-25 Siegfried Wegmann Vorrichtung zum Heben, Stuetzen, Druecken, Ziehen usw. von Lasten

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US697287A (en) * 1900-10-08 1902-04-08 Wesley Lincoln Spaulding Press.
US1586923A (en) * 1924-02-18 1926-06-01 Elvin E Townsend Well-drilling equipment
FR880540A (fr) * 1941-04-01 1943-03-29 Krupp Ag Presse
US2417697A (en) * 1944-03-29 1947-03-18 Evarts G Loomis Press
US2413866A (en) * 1944-06-09 1947-01-07 Laney George W Du Juice extractor
GB770293A (en) * 1954-02-12 1957-03-20 Charles Geoffrey Morgan Recovery of wax from mixtures of wax and feathers
US3015142A (en) * 1958-11-14 1962-01-02 Richard A Rosanoff Friction gripping device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427851A (en) * 1967-02-17 1969-02-18 Bliss Co High energy rate metal forming machine
US3665849A (en) * 1969-03-13 1972-05-30 Angelo Muraro Horizontal press for compacting scrap metal
US4174801A (en) * 1978-08-09 1979-11-20 General Dynamics Corporation Hollow core panel insert installation device
US4283825A (en) * 1979-09-04 1981-08-18 Mckay John Heavy duty press
US5215010A (en) * 1992-03-13 1993-06-01 Johnson Jerome A Free-ranging bi-directional shop press
US20100294144A1 (en) * 2009-05-19 2010-11-25 Fahrenbach Juergen Precision press

Also Published As

Publication number Publication date
GB980571A (en) 1965-01-13
SE305768B (enrdf_load_stackoverflow) 1968-11-04
DK107917C (da) 1967-07-17
NL282492A (enrdf_load_stackoverflow)
DE1290430B (de) 1969-03-06

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